一九九九年新年献辞——国家有色金属工业局局长张吾乐再过三百多天，人类社会即将进入２１世纪，进入下一个一千年！沧海桑田，现代大工业取代了旧日的手工小作坊，航天飞机、宇宙卫星已成为２０世纪科技进步的里程碑；物换星移，青铜器、铁器、火药、指南针、造纸、印刷... 1999 New Year speech - the State Non-ferrous Metal Industry Bureau Zhang WAL music more than three hundred days, human society is about to enter the 21st century, into the next one thousand years! The sea and the sun, the modern big industry has replaced the old hand-made small workshops, space shuttle, cosmic satellites has become a milestone in the 20th century science and technology progress; objects for the stars, bronze, iron, gunpowder, compasses, paper, printing ...